Add test about Batching and Transactions

pulsar-jms/src/test/java/com/datastax/oss/pulsar/jms/TransactionsTest.java

@@ -25,6 +25,7 @@
 import java.util.HashMap;
 import java.util.Map;
 import java.util.UUID;
+import javax.jms.CompletionListener;
 import javax.jms.Connection;
 import javax.jms.Destination;
 import javax.jms.JMSConsumer;
@@ -38,6 +39,7 @@
 import javax.jms.Session;
 import javax.jms.TextMessage;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.pulsar.client.impl.BatchMessageIdImpl;
 import org.junit.jupiter.api.AfterAll;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Disabled;
@@ -570,4 +572,78 @@ public void sendMessageJMSContextTest() throws Exception {
       }
     }
   }
+
+  @Test
+  public void sendMessageWithBatchingTest() throws Exception {
+
+    Map<String, Object> properties = new HashMap<>();
+    properties.put("webServiceUrl", cluster.getAddress());
+    properties.put("enableTransaction", "true");
+    Map<String, Object> producerConfig = new HashMap<>();
+    producerConfig.put("batchingEnabled", true);
+    properties.put("producerConfig", producerConfig);
+
+    try (PulsarConnectionFactory factory = new PulsarConnectionFactory(properties); ) {
+      try (Connection connection = factory.createConnection()) {
+        connection.start();
+
+        try (Session consumerSession = connection.createSession(); ) {
+          Destination destination =
+              consumerSession.createTopic("persistent://public/default/test-" + UUID.randomUUID());
+          try (MessageConsumer consumer = consumerSession.createConsumer(destination)) {
+
+            try (Session transaction = connection.createSession(Session.SESSION_TRANSACTED); ) {
+
+              try (MessageProducer producer = transaction.createProducer(destination); ) {
+                TextMessage textMsg = transaction.createTextMessage("foo");
+                producer.send(
+                    textMsg,
+                    new CompletionListener() {
+                      @Override
+                      public void onCompletion(Message message) {}
+
+                      @Override
+                      public void onException(Message message, Exception e) {}
+                    });
+                producer.send(
+                    textMsg,
+                    new CompletionListener() {
+                      @Override
+                      public void onCompletion(Message message) {}
+
+                      @Override
+                      public void onException(Message message, Exception e) {}
+                    });
+              }
+
+              // message is not "visible" as transaction is not committed
+              assertNull(consumer.receive(1000));
+
+              transaction.commit();
+
+              // message is now visible to consumers
+
+              // verify that the two messages are part of the same batch
+              PulsarMessage message1 = (PulsarMessage) consumer.receive();
+              org.apache.pulsar.client.api.Message<byte[]> receivedPulsarMessage1 =
+                  message1.getReceivedPulsarMessage();
+              BatchMessageIdImpl messageId1 =
+                  (BatchMessageIdImpl) receivedPulsarMessage1.getMessageId();
+
+              PulsarMessage message2 = (PulsarMessage) consumer.receive();
+              org.apache.pulsar.client.api.Message<byte[]> receivedPulsarMessage2 =
+                  message2.getReceivedPulsarMessage();
+              BatchMessageIdImpl messageId2 =
+                  (BatchMessageIdImpl) receivedPulsarMessage2.getMessageId();
+              log.info("ids {} {}", messageId1, messageId2);
+
+              assertEquals(messageId1.getLedgerId(), messageId2.getLedgerId());
+              assertEquals(messageId1.getEntryId(), messageId2.getEntryId());
+              assertEquals(messageId1.getBatchIndex() + 1, messageId2.getBatchIndex());
+            }
+          }
+        }
+      }
+    }
+  }
 }